Ter’angreal
of this type may vary slightly in appearance, but all have the same
attributes. They are small circles, usually porcelain, in the design of the
ancient symbol of the Aes Sedai. They are worn about the neck on a chain or
rope of some sort; this rope or chain is part of the ter’angreal.

While wearing
the amulet, anyone, channeler or not, gains the ability Power-Heightened
Senses (p. 97). This does not stack with anyone actually having the feat and
holding the True Source.